4i5 
Flowers of Stachys sylvatica , Linn . 
were attacked by Perrisea Stachydis. Very few galls, however, were found 
in the autumn (Connold does not report the occurrence of this gall so far 
on in the year), and the flowers did not show obvious signs of disease, as 
did those found in the summer. It is possible that such self-pollinating 
flowers are due to malnutrition. 
Other flowers were also found in which pollination had taken place in 
the unopened bud. There were comparatively few of these ; and it was 
thought, at first, that the anthers had been accidentally made to dehisce 
when splitting open the flower. A careful examination of artificially opened 
flower-buds, however, showed that this was not the case. Bud-pollinated 
flowers differed from the ordinary buds only in having open anthers and 
widely divergent stigmas, with pollen on them ; such flowers could not be 
distinguished from the ordinary flower-buds except by opening them. 
Fig. 4. See Table IV and text. [Bradenham, near High Wycombe, Bucks., 1919.] 
Goebel (17) has figured flowers of Laminm amplexicaule which are similar 
to the ones here mentioned. I have no evidence to bring forward as to the 
conditions under which such forms develop. They seemed to be fewer after 
rain ; but few such flowers were found, and I have no information as to the 
relative frequencies before and after rain. 
Near this district, on the chalk, three groups of plants bearing virescent 
flowers were found (Fig. 5 ), two groups in a hedge and one just on its 
borders. All the flowers on these plants were affected ; but all other 
clumps of plants in the immediate neighbourhood, on either side of the 
hedge, were in every way normal. No sign of any disease, nor of anything 
that could be related causally to the condition, could be found either in 
the parts of the plant above ground or in the underground portions. Plants 
have been gathered and replanted in the hope that further observations 
might give a clue to the reason for this condition. A note by A. W. Bartlett 
(3) gives a very careful description of the condition of the gynoecia in two 
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